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duty like the Class 7 with an impressive 3/4" foot lift. This makes the Class 7 able to stitch through heavy materials up to 3/4" with threads as strong as 57 lbs. Originally made by Singer in the US and Europe for supplying the demand for heavy-duty clothing for the troops, for many years after the war this class was not available as new because the market was filled. With the outsourcing of many sewing manufacturing jobs, nowadays many
Chinese Class 7 machines are available and built by Federal Specifications giving them a performance equal to the original ones (FSN:3530-3111-1556, FSN: 3530-3111-3675, FSN: 3530-311-1556, FSN: 3530-3111-3075).
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407:) catches the upper thread at the point just after it goes through the needle. The hook mechanism carries the upper thread entirely around the bobbin case so that it has made one wrap of the bobbin thread. Then the take-up arm pulls the excess upper thread (from the bobbin area) back to the top, forming the lockstitch. Then the
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machines are available but uncommon, and there are essentially no fancy-pattern stitching industrial machines other than dedicated embroidery and edge decoration machines. Even something as simple as a bar-tack or a buttonhole stitch is usually done by a dedicated machine incapable of doing anything
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Stretch stitch geometry is specifically for stretchability. While the needle is moving, as for straight or zigzag stitches, the feed dogs automatically move the fabric forward and backward. As with zigzag stitches, stretch stitching is controlled by mechanical cams, but because of the dual action,
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Ideally, the lockstitch is formed in the center of the thickness of the material — that is, ideally the upper thread entwines the lower thread in the middle of the material. The thread tension mechanisms, one for the upper thread and one for the lower thread, prevent either thread from pulling the
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Industrial lockstitch machines with two needles, each forming an independent lockstitch with its own bobbin, are also very common. There are different types of lockstitch industrial machines. The most commonly used are the drop feed for light and medium duty, and walking foot for medium and heavy
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Zigzag stitch geometry is produced when the needle moves rhythmically side to side while stitching, while the feed dogs are following only in the normal forward "four motion" movement. Most lockstitch machines made after the 1960s are capable of doing this; older machines achieve the same stitch
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By adding controlled motion of the material being sewn through an additional set of motors, arbitrary customized patterns of 100 cm or more in each direction can be sewn, opening the door to the very popular category of programmable household embroidery machines.
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Blind stitch geometry is a derivative of the zigzag. It is created in the same manner, except that the needle zigs to the side and then zags back only once every fourth or fifth stitch. It is used to reduce the visibility of hems and other seam edges.
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In older machines, the needle and feed motion are controlled by mechanical cams. Some modern household machines offer a slot for user-replaceable custom stitch cams. In more recent designs, the needle and feed motion are directly motorized.
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cams. As the double cam rotates, the first follower rides along one track to move the needle bar from side to side, while the second follower rides along a different track to move the feed dogs forward and reverse.
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else. When a variety of decorative stitching is required rather than a single stitch, a "commercial" machine (basically a heavy-duty household machine) is usually employed.
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Straight stitch geometry is produced when the needle has no sideways movements and when the feed dogs are following only in the normal forward "four motion" movement.
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kept on a spindle on top of or next to the machine, through a tension mechanism, through the take-up arm, and finally through the hole in the
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Of a typical garment factory's sewing machines, half might be lockstitch machines, and the other half divided between overlock machines,
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which would be passed through the loop formed when the needle passed through the fabric and then began to retract again.
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Zigzag stitches are used when a stretchable stitch is required, such as when sewing stretchy fabrics.
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Because its two threads run straight and parallel, a straight stitch is not natively stretchable.
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368:. The term "single needle stitching", often found on dress shirt labels, refers to lockstitch.
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Most industrial lockstitch machines sew only a straight line of stitches. Industrial
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with a specialist presser foot which moves the fabric beneath the stationary needle.
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The geometry of the lockstitch is controlled by the presence or absence of:
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604:. Pleasantville, New York: The Reader's Digest Association, Inc., 32-36.
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Brother Direct Drive Lock
Stitcher with Electronic Feeding System NEXIO
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pull the material along one stitch length, and the cycle repeats.
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534:(aka sergers) have entered the home market since the 1980s.
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Most home sewing machines are lockstitch machines, although
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To make one stitch, the machine lowers the threaded
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258:. Unsourced material may be challenged and removed.
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165:introducing citations to additional sources
64:Learn how and when to remove these messages
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442:sideways movements of the machine's needle
336:Learn how and when to remove this message
318:Learn how and when to remove this message
121:Learn how and when to remove this message
602:Reader's Digest Complete Guide to Sewing
155:Relevant discussion may be found on the
84:This article includes a list of general
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418:Correct and incorrect thread tension
256:adding citations to reliable sources
90:it lacks sufficient corresponding
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493:Zigzag stitch § Blind stitch
45:This article has multiple issues.
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148:relies largely or entirely on a
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243:needs additional citations for
53:or discuss these issues on the
360:is the most common mechanical
352:Lockstitch, seen from the side
27:Stitch made by sewing machines
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503:stretch stitch machines have
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376:The lockstitch uses two
405:other hooking mechanism
105:more precise citations.
1343:Frister & Rossmann
1035:Hook-and-loop fastener
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1313:Barthélemy Thimonnier
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1423:at Wikimedia Commons
252:improve this article
161:improve this article
1434:Clothing portal
698:Fabric tube turning
623:Lock Stitcher Movie
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1439:Glossary of terms
1419:Media related to
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1388:Tape edge machine
807:Embroidery stitch
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172:Find sources:
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150:single source
146:This article
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1172:Tape measure
1167:Tailor's ham
1152:Sewing gauge
1030:Hook-and-eye
816:
802:Cross-stitch
792:Chain stitch
787:Catch stitch
777:Blind stitch
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568:Chain stitch
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544:chain stitch
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267:"Lockstitch"
262:
250:Please help
245:verification
242:
217:January 2016
214:
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197:
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176:"Lockstitch"
171:
147:
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111:January 2016
108:
89:
61:
54:
48:
47:Please help
44:
1229:Haberdasher
1147:Seam ripper
979:Self-fabric
954:Interfacing
934:Collar stay
890:Felled seam
832:Pick stitch
797:Coverstitch
532:overlockers
103:introducing
18:Lock stitch
1328:Elias Howe
1289:Simplicity
1224:Dressmaker
1132:Pincushion
1112:Needlecase
1107:Dress form
1066:Grain/bias
1020:Buttonhole
989:Twill tape
900:Style line
827:Pad stitch
817:Lockstitch
782:Buttonhole
762:Backstitch
666:Techniques
589:References
538:Industrial
521:Prevalence
512:Decorative
364:made by a
358:lockstitch
308:March 2009
278:newspapers
187:newspapers
86:references
50:improve it
1279:Clothkits
1269:Butterick
1239:Silkwoman
1204:Suppliers
1059:Materials
929:Bias tape
862:Topstitch
837:Rantering
812:Hemstitch
409:feed dogs
372:Structure
157:talk page
56:talk page
1454:Category
1368:New Home
1299:Machines
1284:McCall's
1261:Patterns
1142:Scissors
1003:Closures
984:Soutache
974:Rickrack
885:Neckline
852:Stoating
822:Overlock
767:Bar tack
748:Stitches
738:Shirring
573:Overlock
562:See also
454:Straight
434:Geometry
1323:Brother
1318:Bernina
1177:Thimble
1071:Selvage
994:Wrights
944:Galloon
939:Elastic
913:Notions
847:Sashiko
842:Running
772:Blanket
683:Darning
673:Basting
555:zig-zag
498:Stretch
428:shuttle
378:threads
292:scholar
201:scholar
99:improve
1421:Sewing
1383:Singer
1378:Sewmor
1363:Merrow
1348:Janome
1338:Feiyue
1244:Tailor
1234:Mercer
1219:Draper
1200:Trades
1102:Bobbin
1081:Thread
1050:Zipper
1015:Button
1010:Buckle
969:Ruffle
964:Piping
867:Zigzag
723:Gusset
708:Gather
659:Sewing
578:Sewing
505:double
465:Zigzag
397:needle
390:bobbin
386:needle
362:stitch
294:
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174:
88:, but
1398:White
1373:Pfaff
1353:Jones
1274:Burda
1095:Tools
1040:Shank
877:Seams
733:Pleat
713:Godet
483:Blind
382:spool
299:JSTOR
285:books
208:JSTOR
194:books
1358:Juki
1333:Elna
1304:list
1086:Yarn
1045:Snap
1025:Frog
918:Trim
857:Tack
753:list
688:Ease
526:Home
403:(or
271:news
180:news
1127:Pin
678:Cut
254:by
163:by
1456::
356:A
59:.
1306:)
1302:(
755:)
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651:e
644:t
637:v
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